基于R404A的冷库用冷藏系统性能实验研究  

Experimental study on performance of cold storage system based on R404A

作　　者：苏之勇 陈刚 赵晓丹 王仕元[1] 陈俊华[1] 张英[1] SU Zhiyong;CHEN Gang;ZHAO Xiaodan;WANG Shiyuan;CHEN Junhua;ZHANG Ying(School of Energy&Environment,Zhongyuan University of Technology,Zhengzhou 450007,China;Zhengzhou University of Economics and Business,Zhengzhou 451191,China)

机构地区：[1]中原工学院能源与环境学院,河南郑州450007 [2]郑州经贸学院土木建筑学院,河南郑州451191

出　　处：《热科学与技术》2024年第5期442-448,共7页Journal of Thermal Science and Technology

基　　金：国家自然科学基金资助项目(51676201);河南省重点科技攻关资助项目(202102310230);中原工学院自主创新应用研究资助项目(K2019YY013)

摘　　要：针对冷库用冷藏系统压缩机排气温度较高、制冷性能较差等问题,搭建了以R404A为制冷剂的冷藏系统实验台,研究分析了压缩机转速、库内温度变化对系统主要制冷性能参数的影响。结果表明:在库外32.0℃、库内3.0℃工况下,当转速从2 400升高到4 200 r/min时,系统排气温度最高为80.5℃,低于90.0℃,系统COP最大可达3.98;且在压缩机转速3 000 r/min下,当库内温度从-5.0升高到5.0℃时,系统排气温度均低于90.0℃,尤其在-5.0℃时,COP可达2.79。In order to solve the problems of high exhaust temperature and poor refrigeration performance of the compressor in cold storage,a refrigeration test system with R404Aas refrigerant was set up,and the influence of compressor speed and storage temperature on the main refrigeration performance is analyzed.The results show that the maximum exhaust temperature of the system is 80.5℃when the speed increases from 2400to 4200r/min,and the maximumCOP of the system is 3.98when the surrounding temperature is 32.0℃and storage temperature is 3.0℃.At the compressor speed of 3000r/min,when the storage temperature increases from-5.0to 5.0℃,the system exhaust temperature is lower than 90.0℃,especially at-5.0℃,the COPcan reach 2.79.

关 键 词：冷库 冷藏系统 R404A制冷剂 制冷性能 

分 类 号：TH3[机械工程—机械制造及自动化]